3813243100405 has 4 divisors (see below), whose sum is σ = 4575891720492. Its totient is φ = 3050594480320.

The previous prime is 3813243100399. The next prime is 3813243100409. The reversal of 3813243100405 is 5040013423183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1350983133124 + 2462259967281 = 1162318^2 + 1569159^2 .

It is not a de Polignac number, because 3813243100405 - 2³³ = 3804653165813 is a prime.

It is a super-2 number, since 2×3813243100405² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3813243100409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381324310036 + ... + 381324310045.

It is an arithmetic number, because the mean of its divisors is an integer number (1143972930123).

Almost surely, 2^{3813243100405} is an apocalyptic number.

It is an amenable number.

3813243100405 is a deficient number, since it is larger than the sum of its proper divisors (762648620087).

3813243100405 is an equidigital number, since it uses as much as digits as its factorization.

3813243100405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762648620086.

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 3813243100405 its reverse (5040013423183), we get a palindrome (8853256523588).

The spelling of 3813243100405 in words is "three trillion, eight hundred thirteen billion, two hundred forty-three million, one hundred thousand, four hundred five".